Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7f791463a40dad8…

MALICIOUS

PDF

45.9 KB Created: 2021-05-10 20:49:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f398c419de8915431fa289d4fc08ebf4 SHA-1: 494cbce165c87e000f50aa9d138c5678c739be63 SHA-256: e7f791463a40dad82cd7a4ec6fd65abf632202be737fd7f2e57cbb08add2727e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, specifically advertising 'free generator / game hack' lures for popular games. These links likely lead to further malicious content or phishing sites. The ML classifier also flagged this PDF as malicious, supporting the observed malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/300-daily-free-spins-coin-master-game-hack In PDF document text
    • http://arkivthy.dk/images/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/roblox-army-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/static-moonactive_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bbf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BBF 25584 bytes
SHA-256: 424a0fad3663b2c258c4c6d1ddbb8967a42bc9d6357fe4e248cb9f558d1410e4
font_01_sfnt_off000085cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85CF 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FBA 18656 bytes
SHA-256: 54868513bfe31238ae3395f8478781089c68907253390a8344cb056fc0e1040c

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